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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-03 08:09:25 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2024-11-03 08:09:25 -1000 |
| commit | 8f0b844adc096feee437c6271a1419ee81383fc6 (patch) | |
| tree | 0028f8f3feb99d1eac1f5dc5d5bfe4aad5929ee1 /kernel | |
| parent | 3e5e6c9900c3d71895e8bdeacfb579462e98eba1 (diff) | |
| parent | e6c24e2d05bb05de96ffb9bdb0ee62d20ad526f8 (diff) | |
Merge tag 'irq-urgent-2024-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Thomas Gleixner:
- Fix an off-by-one error in the failure path of msi_domain_alloc(),
which causes the cleanup loop to terminate early and leaking the
first allocated interrupt.
- Handle a corner case in GIC-V4 versus a lazily mapped Virtual
Processing Element (VPE). If the VPE has not been mapped because the
guest has not yet emitted a mapping command, then the set_affinity()
callback returns an error code, which causes the vCPU management to
fail.
Return success in this case without touching the hardware. This will
be done later when the guest issues the mapping command.
* tag 'irq-urgent-2024-11-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gic-v4: Correctly deal with set_affinity on lazily-mapped VPEs
genirq/msi: Fix off-by-one error in msi_domain_alloc()
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/irq/msi.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 3a24d6b5f559..396a067a8a56 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -718,7 +718,7 @@ static int msi_domain_alloc(struct irq_domain *domain, unsigned int virq, ret = ops->msi_init(domain, info, virq + i, hwirq + i, arg); if (ret < 0) { if (ops->msi_free) { - for (i--; i > 0; i--) + for (i--; i >= 0; i--) ops->msi_free(domain, info, virq + i); } irq_domain_free_irqs_top(domain, virq, nr_irqs); |